Coin-controlled finger-pull



(No Model.)

P. R. WHTE.

G01N CONTROLLED FINGER PULL.

Patented Peb. 5

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NirEn STATES PATENT OEEicE.

FREDERICK R. IVHITE, OF BOSTON, MASSACHUSETTS.

COIN-CONTROLLED FINGER-PU LL.

SPECIFICATION forming part of Letters Patent No. 397,160, dated February5, 1889. Application tiled July 14, 1888. Serial No. 279,987. (Nomodel.)

To all whom, it may concerne Be it known thatI, FREDERICK R. WHITE, ofBoston, in the county of Suffolk and State of Massachusetts, haveinvented certain new and useful Improvements in Coin-ControlledFinger-Pulls, of which the followingis a speciication.

.Illy invention relates to dynamoineters generally, and particularly tocoin-controlled tinger-pulls, so called, which are contrivances designedto test or measure the strength of or power of pulling by a llinger ofthe hand, and which are constructed so that in their normal position thepull willbe locked against operation, but in which the locking means maybe moved or controlled by a coin to release the pull and permit a singleoperation of the same.

It is the object of my invention to provide improvements in the nxeansfor locking the device when in its normal position against operation,and releasing the pull from the locking devices by means of a coin, soas to permit the pull to be operated once, and not oftencr, by the useof a single coin, which improved means shall be simple in constructionand certain of operation.

It is also the object of my invention to provide such improvements iniinger-pulls as will enable a register to be attached thereto, theconstruction and arrangement of the pull with respect to the registerbeing such as that upon each operation of the former the latter willalso be operated and register orindicate the number of such operations.

In order that a full and clear under-stainling may be had of myinvention, I will proceed to describe the same, having reference to theaccompanying drawings, forming a part of this speciiication, of which-Figure l is a side elevation of my improved finger-pull complete. Fig. 2is a longitudinal sectional view of the same. Fig. 3 is a hori Zontalsectional view of the same, taken on the line 3 3 of Fig. 2, looking'upward. Fig, a is a front end view. Figs. 5, G, and 8 are detail viewshereinafter particularly referred to. Fig. 7 is a top plan view of aportion of the device.

The same lett-ers of reference designate the same parts or features, asthe case may be, in all of the views.

In carrying ont my invention I construct a casing, a, of suitable formand strength, and form therein bearings for the rod band its attachedrack-bar c, so that said rod and rack-bar may be moved longitudinally intheir bearings and be drawn out of the casing by taking hold of andpulling outward on the finger-hook (l, provided on the forward end ofrod b and extending beyond the forward end of the casing, as shown. edesignates a strong spring surrounding rod b, and bearing at its rearend against a projection or offset, or the like, at the rear end of therod and against the casing at the forward end, so as to offer resistanceto the pulling out of the rod.

The bar c is provided on its under side with ratchet-teeth f, with whichthe rearward end of a pawl arm or lever, g, engages when said lever isin its normal position. The pawl-lever g is pivoted or fulcrumed on astandard, 71, in the machine, though it might as well be fulcrumed onthe casing, and its forward arm, g is slightly heavier or of greaterspeciiic gravity than the rearward arm, g?, so that, as has already beenstated, the pawl g3 on the end of the arm g2 will be normally held inengagement with the ratchet-teeth f. The free end of the arm g2 isprovided with a finger, g4, which extends laterally under the dischargeend of a coin-chute, 1L', which chute is constructed and arranged toguide a coin (say a cent) inserted therein into position on thelaterally-extending linger g4, and so overcome the weight of the forwardarm, g', of the pawl-lever g and disengage the pawl g3 from the teeth ofthe rack-bar c and permit the rod b to be pulled out, as indicated bydot-ted lines in Fig. 2; but in order to prevent the coin from fullyleaving the chute t' and falling' off from the laterally-projectingfinger g4, so that the pawl g3 would immediatelybecome re-engaged withthe ratchet-teeth of the bar c, I provide a stop, j, which may extendvdown from the rack-bar c and laterally under the pawl g3, so that whilethe pawl may be carried down by the coin far enough to disengage it fromthe teeth or notches in said bar, as indicated by IOO zo operate on thedotted linesin Fig. 9, it will be prevented by the stop j :from beingcarried down so far as to allow the coins'leaving the chiite and tallingott trom the laterally-projeeting linger g1, as will be understemlwithoutfurther deseription.

rIhe deseriptien thus t'ar "given, it will be seen, tends only to showhow, when the paris are in their normal position, the rod Ii will be Iolocked against the pulling out ot' the same, f

and how, by the use ol a coin, the red maybe released lrom the locking,so that it earn be pulled out. In addition te these things, however, inv invention includes means whereby when the rod o is released l'rom thelocking l means and drawn out to any appreciable extent, and thenallowed to recede lo the same extent, it cannot be farther drawn outwithout again droppingI a coin into the chute yi to pawl g, as beforeexplained. 'lln e means will next be described.

7.1 designates a li'rietion plate or clip extending tor a short distancebeneath and along the rear side oit' the rack-bar fr, the forward 2 5end of the portion of the clip beneath the bar reaching up close to thepawl g3, as seen in Figs. 2 and i5, so that it said pawl should bedepressed and the triction-clip 7s should be moved forward a slightdistance it would be 3o brought lunder said pawl, and so prevent thelatter from engaging with the teeth of the 'rack-bar e, as is elearlyshown in the detail view, Fig. 8. The friction-clip L is provided on itsrear side with an Aangular part,

adapted to extend up along the side of the raek-l ar c', as shown bydotted lines in Fig. S, which angular part 7.a is provided with a block,in which is formed a short slot, nl, through which projects a pin, n,connected 4.o with the frame or casing a ol;l the device, so

that said friction-clip may have a limited movement on the bar c. Theblock Z may be made integral with the clip 7.', or be secured thereto inany suitable manner. The rearward end of the portion et thei'rietion-clip 7c under the bar o is preferably bent, so as to befrictionally engaged by the rack-teeth of the 1'aek-ba1, and be movedthereby to the extent permitted by the slot m.

It', now, a coin-say a @lente-should be dropped into the chute `1' andthe pawl g3 disengaged from the teeth ot the rack-bar, as bet'oredescribed, the operator may take hold ot` the hook d, and b v pullingoutward thereon draw said rod out against the tension ot' the spring c.In so moving the rod to an appreciable extent the friction-clip 7; willbe carried lorward under the end of the pawl g3, so that, even thoughthe stop ,7' be also 6o drawn forward and from under said pawl so as topermit the coin to tall from the chute and ott from the linger g", andthe pawl to nieve upward toward its normal position, said pawl will notengage the teeth of the rack-bar c, but will be prevented from so do ingby the friction-clip 7b', as seen in. Fig. 8,

until said rack-bar is allowed to recede to an extent sut'tieient tocarri7 the l'riction-clip back tar enough to move its forward end troniunder thepawl, which distanee need be but slight, and will be limited bythe slot in and the pin n.

As a means et indicatingI the number otl times that the device may havebeen operated, I attach a registering mechanism, o, to the rear end el'the device, which registering mechanism may be olf any ori'linary ersuit` able construction whieh is eapable olf being operate `l one degreel'or eaeh movement or vibration ol the operating-lever y. I have notshown the eonstruetion olf the registeringI meelntnism in detail, lorthe reason that, per se, it constitutes 'no part et' iny presentinvention, and may be ol well-knmvn organi lation. The :forward end olfthe lever Vp is arranged to come in contact with the rear end ot' theban e, or it may be ot' the rod l), as the same are moved rearwardly,and so be operated to move the indieating-lingers q ot' the registeringmechanism one degree, as before stated, thus indicating the number ol'times that the device has been operated.

A graduated scale, l', is arranged on the easing or frame a at the sidesoit' a slot, s, formed in said casing, and an indicating`- slide, t,constructed and arranged to be moved by the rod b or its adjunets, asthe same may be pulled out or drawn forward, operates in said slot andon said graduated scale to indicate or mark the extent to which the rodhad been drawn out. In the present :instance I have shown a strip, u,connected with the indicating-slide and extending back, with its rearend resting or bearing against the same part as the rear end of thespring c, so that as the bar is drawn forwarifl vthe indieating slidewill be moved in the same direction.

Though I have been particular to describe the form and arrangement ofthe various parts of my improved finger-pull, it is obvious that thesemay be varied within the limits of mechanical skill without departingfrom the nature or spirit of the invention.

Having thus explained the nature of my invention, I would have itunderstood that what I claim is I. A 1inger-pull consisting of a frameor casing, a rod having bearings and longitudinally movable in saidcasing, said rod being provided with a linger-hook or similar deviceextending beyond the easing,whereby Said rod maybe drawn outward, aspring to resist the drawing outward otr said rod, a bar provided withratchet-teeth connected with said rod, a pawl to engage theratchet-teeth of said bar, a coin-chute to guide a coin into position onsaid 'pawl to disengage it from said ratehet-teeth, and a friction-cliphaving a limited movement on said ratchet-bar between said pawl and theteeth on said bar, as set `lorth.

2. The combination, in a finger-pull, of the IOO IIO

longitudinally-movable rod and its mekfbal, with the friction-clip 7.-.,hm'ing a limited movement on said bei?, L pawl to engage and lbedisengaged from said raekbm3 and a' In testimony whereof I have signedmy name to this specification, in the presence oEtWo subseiibingWitnesses, this 2d dey of July, 1888.

FREDERICK R. WHITE.

